First, our exclusive interview with george zimmerman's wife. Gio benitez has more. This comes after shellie struck a deal to keep her out of jail for the perjury charges she faced. Reporter: For more than a year, she lived in the shadows. But shellie zimmerman wants to set the record straight. Living in hiding, at times in the woods, the couple's marriage may now be in trouble. For months, shellie zimmerman sat silent by, as her husband was tried and accused of murder. Now, she's speaking out. I can't tell you how many nights I've gone or laid awake at night, just thinking, I wish to god these circumstances had been different. Reporter: Those circumstances, she says, began even before the shooting of trayvon martin. She didn't explain what was going through george's head because she wasn't home that february night. I was staying at my father's house. We had gotten into an argument the night before. And I left. Reporter: In an interview with christy o'connor, an investigative reporter, writing a book on the trial, shellie said she always believed george's story. Do you think george is capable of having profiled trayvon and killed him on purpose? No. Why not? That's just not his way. Reporter: And she stuck by him, even as the death threats came and they were forced to live in hiding. We have been pretty much gypsies for the last year and a half. We lived in a trailer in the woods, scared every night that someone was going to find us and that it would be horrific. Reporter: Shellie admits she lied for george, hiding how much money they had from a judge. I can rationalize a lot of reasons for why I was misleading. But the truth is, I knew that i was lying. Reporter: On wednesday, in the same courthouse where her husband was acquitted, shellie pleaded guilty to perjury. But he was not in court for her. Something that shellie can't explain. Did you want him to support you? I always want my husband's support. Reporter: Since his acquittal in july, george has kept a low profile, with one glaring exception, a visit to a florida gun manufacturing plant, the company that made the gun he used to kill martin. Do you think it was the right thing to do? Or sensitive? No. Reporter: What about their marriage now? Are you together? I'm not going to answer that. I want to have children and stay married. With george? That's something I'm going to have to think about. Reporter: Whether it's with george or not, shellie says she's determined to move forward. I've made mistakes and I want to I don't know them right now. Reporter: Part of that process, she says, delivering a message to trayvon martin's parents. I'm so deeply sorry for their loss. I can't even begin to understand the grief that a parent experiences when they lose a child. Reporter: And as part of her guilty plea, the judge sentenced shellie to probation and 100 hours of community service. In the interview, she says she hopes to do that with a christian ministry. A lot of pain. Thanks, gio. We're going to turn to an

This transcript has been automatically generated and may not be 100% accurate.

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